Deleting a Voicemail from Call Queue in RingCentral

You should routinely delete voicemails that are unnecessary to prevent reaching the capacity limit for voicemails (which is 200).  Once you reach your capacity, callers will not be able to leave a message.

Log in to your Ringcentral online account (Here's how) and select Call Queue Management from the drop-down menu at the top-right. 

Click on the Messages tab. Here, you should see all your voicemails and be able to select and delete.